SU1218959A1 - Device for measuring the seeding rate of feed grain - Google Patents

Description

The invention relates to the field of measuring the seed rate of seed, for example, potato tubers, and can be used in agriculture for testing and checking the work of potato planters, setting a predetermined rate of planting potatoes per hectare.

1. Spruce of the invention - increase of measurement accuracy

The drawing shows the functional diagram of the proposed device.

The device contains a seed flow measurement channel, consisting of a seeding sensor, including radiator 2 and receiver 3, electrically connected via amplifier 4 to the inverting input of comparator 5, the inverting input of which is connected to the seed size setting unit b as a variable signal amplitude factor. The output of the comparator 5 is connected in parallel with the light indicator 7 of the control of the planting process, with the first input of the element 8 and with the first input of the inverter 9, the second input of which is connected to the unit 10 of the seed propagation speed in the form of a block of variable ratio of the signal duration. The output of the inverter driver 9 is connected to the second input of the And 8 element, the output of which is connected to the first input of the And 11 element, the output of the And 11 element is connected via the T input of the counter-decoder 12 of the display unit to the digital indicator 13 of the number of planted tubers, which also in the alarm unit. The speed measurement channel of the potato planter consists of a speed sensor 14 connected via a driver 15 to a T input of counter 16, the first output of which is connected to the second input of an And 11 element, and a second output to a C input of a trigger 17. The output of the latter is connected in parallel to a third the input element And 1I and the input of the shaper 18 logical units, the output of which is connected to the P-input of the counter-decoder 12.

Button 19 "Start through shapers 20 and 21 logical units connected to the R-input of the counter 16 and the trigger 17.

The device works as follows.

When a potato crosses a beam of light emitted by the sensor emitter 2, voltage pulses occur in receiver 3, the number of which is equal to the number of tubers planted. These pulses, amplified by amplifier 4, are fed to the first input of the comparator 5, the second input of which receives a signal from the setter 6. The amplitude level of this signal is adjusted in proportion to the size and weight of the tubers of the transplanted fraction. This is necessary to protect the devices from false positives when small stones, lumps of earth, substandard potatoes hit the seed material. When exceeding the magnitude of the signal received from the force5

The body 4 at the comparator 5, the amplitude level set in the setpoint b, at the output of the comparator 5 appears a voltage pulse arriving at the first inputs of the forming body of the inverter body 9 and element 8. The setting unit 10 acts on the second input of the inverter 9 in such a way that a pulse of a strictly defined duration is formed in it from a pulse coming from comparator 5, the value of which is set in the setter 10. The pulse formed by forma, inverter 9 is fed to the second input of the element 8, where it is compared with the pulse Som of the comparator 5. If the magnitude comparator is exceeded, the pulse duration 5 pulse width shaper value -invertora element 9 and the outlet 8, a signal. This selection is necessary to protect the instrument from unwanted inclusions (large stones and lumps)

0 land), as well as straw and tops that fall into the seed.

Sensor 14 of the potato planter produces voltage pulses, the number of which is equal to the number of wheel revolutions. These IMs are pulsed through shaper 15

on the T-input of counter 16, which starts counting wheel revolutions. Prior to the arrival of the first impulse of revolutions, the first output of the counter 16 is the level signal O, the closing element AND 11. This is necessary for the potato tuber count. made on a strictly defined part of the path. When the first impulse of revolutions arrives at the first output of counter 16, a signal with the level “1” appears, and since the direct output of the counting trigger 17

the third input element And 11 receives a signal with a level of "1, then the last opens and the counter 12 starts counting pulses from the seeding sensor 1. Arriving at counter 16 of the seventh pulse from sensor 1, which is equivalent to a potato planter's path of 14.3 m length with 0.7 m spacing or 10 m planting area, triggers the trigger 17. At its output, a signal with the level “O element 11 is closed, the pulse counting of the tuber counter 12 stops and on the digital indicator 13 information about the number of tubers planted on an area of 10 m or in thousands of pieces on an area of 1 hectare appears, which is an indicator of the rate of planting potatoes. Simultaneously from the second exit

Q counter 16 at its reset input R receives a signal of level "1 and counter 6 is reset. Information about the number of planted potato tubers is stored in counter 13 for the time that} 1 is necessary for the next seven pulses from sensor 14 to arrive at counter 16 The last of the second seven revolutions pulses, i.e. the fourteenth from the start of the counting, zeroes the counter 16, triggers the counting trigger 17, a signal appears at its output, which

through the logical unit shaper 18, zeroed counter 12 and the tuber count process is resumed. The formers 20 and 21 logical units sets the counter 16 and the trigger 17 to the initial state when the power is turned on with the button 19.

Thus, in order to bring the device to a working state, it is necessary to turn on the power of the device, after which the measurement process goes through an automatic machine; 1) With a nepifo.iH test output of the standard rate of potatoes on the digital - HHAtiKaTop. The indicator light 7 signals the presence of the planting process of potatoes and its termination in violation of the planting technology (open circuit of the scooping apparatus, the absence or sticking of potato tubers in the planter bunker, etc.).

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Compiled by 3. Sidorov

Editor N. BobkovaTehred And WeresKorrector M. 1ozhr

Order 1169/2 Draw 679 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. D. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

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Claims (1)

DEVICE FOR MEASURING THE SEEDING RATE OF SEEDING MATERIAL, comprising a channel for measuring the flow rate of seed, consisting of a seed meter connected to an amplifier, a channel for measuring speed, consisting of a speed sensor and a former, an indication unit, a Start button and a power source, characterized in that, in order to increase the accuracy of measurement, the channel for measuring the seed flow rate is equipped with a comparator with a seed size adjuster, an inverter-shaper with a seed speed adjuster of the series and the first element And, the speed measuring channel is equipped with the second element And, a counter, a trigger with a counting input and three shapers of logical units, the output of the amplifier connected to a non-inverting input of the comparator, the output of which is connected in parallel with the first input of the first element And and with the first input of the shaper -inverter, the output of which is electrically connected to the second input of the first element And, while the first output of the counter is connected to the second input of the second element And, connected by the first input to the output of the first element And, and the second output of the counter is electrically connected to the C-input of the trigger, the output of which is connected in parallel with the third input of the second element And and the input of the first driver of logical units, and the output of the latter and the output of the second circuit And are connected to the display unit, and the R-inputs of the counter and the trigger are connected through the "Start" button and the second and third formers of logical units with a power source. >